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- Title
Characterization of a newly isolated freshwater Eustigmatophyte alga capable of utilizing far-red light as its sole light source.
- Authors
Wolf, Benjamin M.; Niedzwiedzki, Dariusz M.; Magdaong, Nikki Cecil M.; Roth, Robyn; Goodenough, Ursula; Blankenship, Robert E.
- Abstract
Oxygenic phototrophs typically utilize visible light (400-700 nm) to drive photosynthesis. However, a large fraction of the energy in sunlight is contained in the far-red region, which encompasses light beyond 700 nm. In nature, certain niche environments contain high levels of this far-red light due to filtering by other phototrophs, and in these environments, organisms with photosynthetic antenna systems adapted to absorbing far-red light are able to thrive. We used selective far-red light conditions to isolate such organisms in environmental samples. One cultured organism, the Eustigmatophyte alga Forest Park Isolate 5 (FP5), is able to absorb far-red light using a chlorophyll (Chl) a-containing antenna complex, and is able to grow under solely far-red light. Here we characterize the antenna system from this organism, which is able to shift the absorption of Chl a to >705 nm.
- Subjects
EFFECT of light on algae; PHOTOSYNTHESIS; LIGHT-harvesting complex (Photosynthesis); CHLOROPHYLL analysis; HETEROKONTOPHYTA; CYANOBACTERIA
- Publication
Photosynthesis Research, 2018, Vol 135, Issue 1-3, p177
- ISSN
0166-8595
- Publication type
Article
- DOI
10.1007/s11120-017-0401-z